Zobrazeno 1 - 10
of 50
pro vyhledávání: '"J D, Colvin"'
Autor:
Russ Benjamin, Mark May, Duane A. Liedahl, Patrick Poole, B. E. Blue, D. B. Thorn, M. A. Barrios, J. D. Colvin, Klaus Widmann, Gregory Kemp
Publikováno v:
Physics of Plasmas. 26:063105
We report on the performance of high x-ray fluence Kr K-shell sources that are being developed for high energy density experiments. These targets are 4.1 mm in diameter 4.4 mm tall hollow epoxy tubes having a 40 μm thick wall holding 1.5 atm of Kr g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f8459b5402cec05c06b81049ae38ed1
https://doi.org/10.1063/1.5097960
https://doi.org/10.1063/1.5097960
Autor:
Alastair Moore, Gregory Kemp, J.L. Weaver, Daniel Thorn, Mark May, B. E. Blue, Klaus Widmann, J. D. Colvin, Marilyn Schneider
Publikováno v:
The Review of scientific instruments. 87(11)
The Dante is an 18 channel filtered diode array used at the National Ignition Facility (NIF) to measure the spectrally and temporally resolved radiation flux between 50 eV and 20 keV from various targets. The absolute flux is determined from the radi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e169e63591b1f835ce92d2801fab2bb9
https://pubmed.ncbi.nlm.nih.gov/27910695
https://pubmed.ncbi.nlm.nih.gov/27910695
Autor:
J. Sheppard, Justin Wark, Andrew Higginbotham, J. Belak, Huw Davies, M. S. Schneider, Daniel H. Kalantar, Kai Kadau, James S. Stolken, Brad Lee Holian, William J. Murphy, Gilbert Collins, James Hawreliak, Marc A. Meyers, Jon Eggert, Mark A. Duchaineau, Bruce Remington, Hector Lorenzana, Nigel Park, Peter S. Lomdahl, K. Rosolankova, J. D. Colvin, Robert E. Rudd, Timothy C. Germann
The past few years have seen a rapid growth in the development and exploitation of X-ray diffraction on ultrafast time-scales. One area of physics which has benefited particularly from these advances is the the field of shock-waves. Whilst it has bee
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d75b2a7036b2c7041280cd2bc4e4468
https://ora.ox.ac.uk/objects/uuid:d725ad20-5725-46be-bbfd-3db818aa5f34
https://ora.ox.ac.uk/objects/uuid:d725ad20-5725-46be-bbfd-3db818aa5f34
Autor:
Daniel H. Kalantar, Eduardo M. Bringa, Robert E. Rudd, M. S. Schneider, K. T. Lorenz, James Belak, Marc A. Meyers, A. M. Allen, Mukul Kumar, Kimberly S. Budil, J. D. Colvin, Justin Wark, K. Rosolankova, James S. Stolken, Maria J. Caturla
Laser-based shock experiments have been conducted in thin Si and Cu crystals at pressures above the published Hugoniot Elastic Limit (HEL) for these materials. In situ x-ray diffraction has been used to directly measure the response of the shocked la
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::766ed3fedde40abacec251d61d031bbd
https://doi.org/10.1063/1.1565118
https://doi.org/10.1063/1.1565118
Autor:
K. Koga, J. D. Colvin, S. Tosaki, N. Tanaka, Akifumi Yogo, Zhe Zhang, K. B. Fournier, Gregory Kemp, Hiraku Matsukuma, H. Nishimura
The nanostructure of very-low-density aerogels (< 10 mg/cm3) affects the laser heating and propagation of the subsequent heat front. Simulations treat these materials as an atomistic medium without any structure differentiating between near-solid-den
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::831f776e4e1fd07afede8e23f3d105ea
https://doi.org/10.2172/1247286
https://doi.org/10.2172/1247286
Autor:
J. D. Colvin
An effort to develop sub-critical-density high-Z metal-doped and pure metal foams as laser-driven x-ray sources is described. The main idea is that the laser beams preferentially heat the electrons, and if the plasma is sufficiently low density so th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2fb53e1f6b3922cb184d6fc2bfc852b4
https://doi.org/10.2172/1241967
https://doi.org/10.2172/1241967
Autor:
Daniel Thorn, Klaus Widmann, Russ Benjamin, Patrick Poole, Mark May, M. A. Barrios, B. E. Blue, Gregory Kemp, J. D. Colvin
Publikováno v:
Physics of Plasmas. 25:056302
Laser heated plasmas have provided recently some of the most powerful and energetic nanosecond length laboratory sources of x-ray photons (Ephoton = 1–30 keV). The highest x-ray to laser conversion is currently accessible by using underdense (ne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd53c03902dd4e556c0c90f4f7bedf80
https://doi.org/10.1063/1.5015927
https://doi.org/10.1063/1.5015927
Autor:
K. C. Brown, Gregory Kemp, Hiraku Matsukuma, Zhe Zhang, Akifumi Yogo, K. B. Fournier, J. F. Davis, Hiroaki Nishimura, J. D. Colvin, K. Koga, Nozomi Tanaka
Publikováno v:
Physics of Plasmas. 25:032702
This work was motivated by previous findings that the measured laser-driven heat front propagation velocity in under-dense TiO2/SiO2 foams is slower than the simulated one [Perez et al., Phys. Plasmas 21, 023102 (2014)]. In attempting to test the hyp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f25f6576ab60d77c6699bd97cc9220a
https://doi.org/10.1063/1.5012523
https://doi.org/10.1063/1.5012523
Autor:
J. S. Wark, Daniel H. Kalantar, James S. Stolken, Jon Eggert, Hector Lorenzana, J. D. Colvin, K. Rosolankova, Bruce Remington, S. W. Pollaine, James Hawreliak
Publikováno v:
Astrophysics and Space Science. 307:285-289
X-ray diffraction is a widely used technique for measuring the crystal structure of a compressed material. Recently, short pulse x-ray sources have been used to measure the crystal structure in-situ while a sample is being dynamically loaded. To reac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68bf820383b405403d2e0bb057198161
https://doi.org/10.1007/s10509-007-9385-z
https://doi.org/10.1007/s10509-007-9385-z
Autor:
James Hawreliak, K. Rosolankova, James S. Stolken, Gilbert Collins, M. S. Schneider, Daniel H. Kalantar, J. D. Colvin, Jon Eggert, Roger Minich, Justin Wark, Marc A. Meyers, Hector Lorenzana
Publikováno v:
International Journal of Impact Engineering. 33:343-352
In situ diffraction is a technique to probe directly the lattice response of materials during the shock loading process. It is used to record diffraction patterns from multiple lattice planes simultaneously. The application of this technique is descr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef322b011a1fec71e8120fe45fd4a300
https://doi.org/10.1016/j.ijimpeng.2006.09.050
https://doi.org/10.1016/j.ijimpeng.2006.09.050